Navigate

A tuning fork vibrates with 2 beats in 0.04 second. The frequency of the fork is

A tuning fork vibrates with 2 beats in 0.04 second. The frequency of the fork is

Options

(a) 50 Hz
(b) 100 Hz
(c) 80 Hz
(d) None of these

Correct Answer:

50 Hz

Explanation:

Beats / sec = difference of frequencies
2 / 0.04 = frequency difference
Frequency difference = 2 × 100 / 4 = 50 Hz

AFMC2002
admin:

Related Questions

  1. Radius of orbit of satellite of earth is R. Its kinetic energy is proportional to
  2. The equiconvex lens has focal length f. If it is cut perpendicular to the principal
  3. A and B are two metals with threshold frequencies 1.8 x 10¹⁴ Hz and 2.2 x 10¹⁴ Hz.
  4. Magnetism of a magnet is due to
  5. The ratio of specific charge of an α-particle to that of a proton is